PLEASE ANSWER PART B!!!
An elevator rail is assumed to meet specifications if its diameter is between 0.98 and 1.01 inches. Please answer part b!!!
An elevator rail is assumed to meet specifications if its diameter is between 0.98 and 1.01 inches. Each year a company produces 100, 000 elevator rails. For a cost of $10/02 per year the company can rent a machine that produces elevator rails whose diameters have a standard deviation of o. (The idea is that the company must pay more for a smaller variance.) Each such machine will produce rails having a mean diameter of one inch. Any rail that does not meet specifications must be reworked at a cost of $12. Assume that the diameter of an elevator rail follows a normal distribution. Round your answers to three decimal places, if necessary. a. What standard deviation (within 0.001 inch) minimizes the annual cost of producing elevator rails? You do not need to try standard deviations in excess of 0.02 inch. 0.007 b. For your answer in part a, one elevator rail in 1000 will be at least how many inches in diameter? 0.022 Hide Feedback Partially Correct An est to meet specifications is daar is between the tachyces to ever for a cost of $10/per year the company cash that to wear a stard deviation of the that the corretamente ad such man will produce vas having dumatera in Antall that does not meetsociations worked at a cost of 12 me that the diameter of an evalor a fostoma con and your answer to the ceny a. What standard deviation within 0.001s the cost of producing devole you do not need to try standardele in con 0.007 For your wat in part a new 1000 wibrast how many inches anter 0.023 3 Partially Correct An elevator rollisuma to meet species diameter is between 0 and 101 inches. Each your company reduces 100,000 levator rails. For a cost of $10/r' per ver the company can watchine that proces de rails who meters love standard deviation of a (The deals that the company at pay more for a smaller variance. Each such machim will produceras having a medier of Inch Althat does not meet perlications must we worked at a cost of 2 wametut the diameter an elevator al follows a normal distribution Round your answers to three decalcesca * What standard deviation (within 0.001 ches that cost of producinevat you do not need to try standard deviations in exces of 0.122 inch 0.007 b. For your winporta, nekvatorin 1000w be at least how many whes in tameter? 0.02 Hide endock Partially correct
